49021590 has 16 divisors (see below), whose sum is σ = 117651888. Its totient is φ = 13072416.

The previous prime is 49021589. The next prime is 49021597. The reversal of 49021590 is 9512094.

It is a happy number.

It is a super-2 number, since 2×49021590² = 4806232572256200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 1634053 = 49021590 / (4 + 9 + 0 + 2 + 1 + 5 + 9 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49021597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 816997 + ... + 817056.

It is an arithmetic number, because the mean of its divisors is an integer number (7353243).

Almost surely, 2^49021590 is an apocalyptic number.

49021590 is an abundant number, since it is smaller than the sum of its proper divisors (68630298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49021590 is a wasteful number, since it uses less digits than its factorization.

49021590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1634063.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 49021590 is about 7001.5419730228. The cubic root of 49021590 is about 365.9843076075.

The spelling of 49021590 in words is "forty-nine million, twenty-one thousand, five hundred ninety".